CN104581581A
2014-12-31
Novel improved small-size telephone receiver
CN104581576A
2014-12-31
Telephone receiver provided with improved circuit board
CN104507015A
2014-12-31
Novel vibration film with reinforcing rib structure
CN104581582A
2014-12-31
Novel moving iron unit and telephone receiver comprising same
CN104506983A
2014-12-31
Receiver with novel shielding case
CN104581575A
2014-12-31
Receiver of improved structure
CN104540082A
2014-12-31
Telephone receiver of novel structure
CN104581551A
2014-12-31
Vibrating diaphragm with concave-convex reinforcing ribs
CN104507026A
2014-12-31
Receiver with large-vibration-force armature
CN104581570A
2014-12-31
Telephone receiver provided with improved vibration film
CN104581550A
2014-12-31
Novel vibrating diaphragm with pits and telephone receiver
CN104507020A
2014-12-31
Split-type receiver
CN104581580A
2014-12-31
Telephone receiver provided with improved structure
CN104581579A
2014-12-31
Improved small-size receiver
CN104507021A
2014-12-31
Novel magnetic drive mechanism and telephone receiver thereof
CN104581573A
2014-12-31
Low-impedance magnetic force drive mechanism and telephone receiver thereof
CN104581554A
2014-12-31
Novel vibrating diaphragm and telephone receiver
CN104581552A
2014-12-31
Vibrating diaphragm with reinforcing rib structure and telephone receiver
CN104581578A
2014-12-31
Telephone receiver with improved structure
CN104507025A
2014-12-31
Novel small-size telephone receiver
